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Orientation of sphere magnet inside sphere magnet

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magnO:
A sphere magnet inside a sphere magnet, both hollow, which of the two orientations will it prefer?

magnO:
Why?

JW:
Are you trying to make a compass or planing to make power. Also it is nearly impossible to machine these materials. 

magnO:
Just interested in the theory, out of scientific exploration.

JW:
The problem I see is that you need a magnetic bearing, and thats not possible with N-S-N-S  As to the magnetic field is going to attract were it can.   

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